Current Weight Watchers Points Calculator

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Current Weight Watchers Points Calculator

Your trusted tool for calculating WW Points today. Get personalized insights for your weight loss journey.

Calculate Your WW Points

Enter your age in years.
Male Female Select your gender.
Enter your current weight in kilograms.
Enter your height in centimeters.
Sedentary (little to no exercise) Lightly Active (light exercise/sports 1-3 days/week) Moderately Active (moderate exercise/sports 3-5 days/week) Very Active (hard exercise/sports 6-7 days a week) Extra Active (very hard exercise/sports & physical job) Choose the option that best describes your daily activity.
Enter your target weight in kilograms.
Enter your desired weight loss per week (e.g., 0.5 kg).

Your Estimated WW Points

— WW Points —

Key Metrics

BMR: — kcal
TDEE: — kcal
Target Daily Calories: — kcal

Key Assumptions

Points Formula: Standard (based on TDEE & deficit)
Weight Loss Per Week: — kg

Points are estimated based on your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE), adjusted for your weight loss goal. A common approach assigns points such that achieving a deficit results in weight loss.

Weight Loss Projection

Projected weight over the next 12 weeks based on your weekly goal.

Estimated Weekly Points Breakdown

Metric Value Unit
Daily Points Allowance Points
Weekly Points Allowance Points
Calorie Deficit per Week kcal
Estimated Weight Loss per Week kg

A summary of your projected weekly points and weight loss.

What is the Current Weight Watchers Points Calculator?

The Current Weight Watchers Points Calculator is a digital tool designed to help individuals estimate their daily and weekly points allowance within the Weight Watchers (WW) program. Weight Watchers, now rebranded as WW, uses a points system to guide members towards healthier food choices and portion control. This calculator takes into account various personal factors to provide an estimated points target, making it easier for users to navigate their weight management journey. It's crucial to understand that these are estimates and may not reflect the exact points assigned by the official WW app or program, which can be personalized further by WW coaches.

Who should use it? Anyone currently participating in a WW program or considering joining who wants a preliminary idea of their potential points budget. It's particularly useful for those who want to understand the underlying principles of the points system or who are looking for a quick way to estimate their allowance without immediately signing up for the official program. It can also serve as a supplementary tool for existing members to cross-reference their calculated points.

Common misconceptions about WW points calculators include believing they provide official, definitive point values, or that the system is solely about restriction. In reality, the WW program focuses on building sustainable habits, encouraging nutrient-dense foods, and allowing for flexibility. This calculator aims to demystify the initial points calculation process, not to replace the comprehensive support and personalized guidance offered by WW itself.

Current Weight Watchers Points Calculator Formula and Mathematical Explanation

The calculation of Weight Watchers (WW) points, while evolving with program updates, fundamentally aims to assign a value to foods based on their nutritional content, encouraging choices that are lower in calories, saturated fat, and sugar, while higher in protein and fiber. For a Current Weight Watchers Points Calculator, we'll simulate a common approach often used in estimating daily and weekly allowances. This often starts with calculating your energy needs (calories) and then translating those into a points budget.

A widely recognized formula for estimating Basal Metabolic Rate (BMR) is the Mifflin-St Jeor equation:

  • For Men: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) + 5
  • For Women: BMR = (10 × weight in kg) + (6.25 × height in cm) – (5 × age in years) – 161

Next, we determine your Total Daily Energy Expenditure (TDEE), which is your BMR multiplied by an activity factor:

  • TDEE = BMR × Activity Level Multiplier

To achieve weight loss, a calorie deficit is needed. A common target for losing 0.5 kg (approximately 1 lb) per week is a deficit of 500 calories per day, totaling 3500 calories per week.

  • Target Daily Calories = TDEE – (Weekly Calorie Deficit Goal / 7)

The crucial step is converting these calorie targets into WW Points. While the exact proprietary algorithm WW uses is not public, a common estimation method for a daily points allowance might be derived from the TDEE, taking into account that protein, carbohydrates, fats, and fiber contribute differently to points. A simplified model could estimate daily points based on the target calorie intake minus a baseline, or by focusing on creating a specific calorie deficit.

For this calculator, we'll use a simplified approach where daily points are roughly derived from the calculated calorie target needed to achieve the specified weekly weight loss goal. A typical approach could be:

Estimated Daily Points = (Target Daily Calories – Baseline Calories) / Average Calories per Point

A common baseline might be around 1200-1500 calories for women and 1500-1800 for men, depending on activity. For simplicity in this calculator, we'll use a direct conversion from the required calorie deficit. A common WW strategy involves assigning a daily point budget that, when adhered to, facilitates a calorie deficit. Let's assume a conversion factor where roughly 50-60 calories equate to 1 point, and a set of "zero point" foods exist. However, for this generic calculator, we'll focus on the deficit calculation.

We will calculate the required calorie deficit for the goal weight loss:

  • Weekly Calorie Deficit = Weekly Goal (kg) × 7700 kcal/kg (approximate calories in 1 kg of fat)
  • Daily Calorie Deficit = Weekly Calorie Deficit / 7
  • Target Daily Calories = TDEE – Daily Calorie Deficit

Then, we estimate the points:

  • Estimated Daily Points = (Target Daily Calories – Baseline) / CaloriesPerPoint

For our calculator's purpose, let's use a common simplification: The daily points allowance is directly linked to the TDEE, and the weight loss goal is achieved by staying within this allowance, implying the allowance itself creates the necessary deficit.

Variable Explanations:

Variable Meaning Unit Typical Range
Age User's age Years 18 – 90
Weight User's current weight kg 30 – 300
Height User's height cm 120 – 220
Gender User's gender (affects BMR calculation) N/A Male / Female
Activity Level Multiplier for TDEE based on exercise frequency Multiplier 1.2 – 1.9
Goal Weight Desired target weight kg User's current weight – 1 to User's current weight – 100
Weekly Goal Desired weight loss rate per week kg/week 0.1 – 2.0
BMR Basal Metabolic Rate – calories burned at rest kcal/day 1000 – 2500
TDEE Total Daily Energy Expenditure – calories burned daily including activity kcal/day 1500 – 4000+
Target Daily Calories Calorie intake needed for weight loss goal kcal/day TDEE – (Goal Weight Loss * 7700 / 7)
Daily Points Allowance Estimated points budget per day Points 20 – 70 (highly variable)
Weekly Points Allowance Total points budget for the week Points Daily Points * 7

Practical Examples (Real-World Use Cases)

Example 1: Sarah, Aiming for Moderate Weight Loss

Sarah is a 30-year-old female, weighing 75 kg and standing 165 cm tall. She describes her activity level as moderately active (exercises 3-5 days a week). Her goal weight is 65 kg, and she aims to lose 0.5 kg per week.

Inputs:

  • Age: 30
  • Gender: Female
  • Weight: 75 kg
  • Height: 165 cm
  • Activity Level: 1.55 (Moderately Active)
  • Goal Weight: 65 kg
  • Weekly Goal: 0.5 kg

Calculator Output (Estimated):

  • BMR: Approximately 1450 kcal
  • TDEE: Approximately 2247 kcal
  • Target Daily Calories: Approximately 1747 kcal (to achieve 0.5kg loss/week)
  • Estimated Daily Points: Let's assume a baseline of 1500 kcal and ~50 kcal/point, giving roughly (1747-1500)/50 = ~4.9 points. However, WW's system is more complex. A more aligned estimation might yield around 30-35 daily points.
  • Estimated Weekly Points: ~210-245 points

Financial Interpretation: Sarah's calculation shows her daily point target. This means she needs to manage her food choices to stay within approximately 30-35 points daily. The calculator highlights her TDEE and the deficit needed, illustrating that consistency is key. For Sarah, this means planning meals that are satisfying but align with her points budget, focusing on protein and vegetables which are often lower in points.

Example 2: Mark, Active Individual with a Faster Goal

Mark is a 45-year-old male, weighing 90 kg and standing 180 cm tall. He is very active (exercises 6-7 days a week). His goal weight is 80 kg, and he wants to lose 1 kg per week.

Inputs:

  • Age: 45
  • Gender: Male
  • Weight: 90 kg
  • Height: 180 cm
  • Activity Level: 1.725 (Very Active)
  • Goal Weight: 80 kg
  • Weekly Goal: 1.0 kg

Calculator Output (Estimated):

  • BMR: Approximately 1850 kcal
  • TDEE: Approximately 3190 kcal
  • Target Daily Calories: Approximately 2478 kcal (to achieve 1kg loss/week)
  • Estimated Daily Points: Using a similar estimation logic, aiming for a deficit might result in a higher daily points allowance, perhaps around 45-55 points, to ensure sufficient fuel for his high activity level while still creating a deficit.
  • Estimated Weekly Points: ~315-385 points

Financial Interpretation: Mark's higher activity level and weight result in a larger TDEE and potentially a higher daily points allowance. Losing 1 kg per week requires a significant calorie deficit (approx. 7700 kcal/week or 1100 kcal/day). His points budget needs to accommodate this while supporting his strenuous workouts. This example emphasizes that individual needs vary greatly, and the calculator helps visualize these differences in points allocation. He must be mindful of nutrient density to ensure he gets adequate nutrition within his higher point range.

How to Use This Current Weight Watchers Points Calculator

Using our Current Weight Watchers Points Calculator is straightforward. Follow these steps to get your personalized points estimate:

  1. Enter Your Personal Details: Accurately input your Age, Gender, current Weight (in kg), and Height (in cm). These are fundamental to calculating your metabolic rate.
  2. Select Your Activity Level: Choose the option that best reflects your typical weekly physical activity. This multiplier significantly impacts your Total Daily Energy Expenditure (TDEE).
  3. Set Your Weight Loss Goals: Input your desired Goal Weight (in kg) and the Weekly Goal for weight loss (in kg, e.g., 0.5 kg).
  4. Click 'Calculate Points': Once all fields are populated, press the calculate button. The calculator will process your inputs.
  5. Review Your Results: The main result will display your estimated Daily WW Points allowance. You'll also see intermediate values like BMR, TDEE, and Target Daily Calories, along with a summary table and a projected weight loss chart.

How to read results:

  • Main Result (Daily Points): This is your primary target for daily consumption.
  • Intermediate Values (BMR, TDEE, Target Calories): These provide context for how your points are derived, showing your body's energy needs and the deficit required for weight loss.
  • Summary Table: Offers a breakdown including weekly points, calorie deficit, and projected weight loss, reinforcing your goals.
  • Chart: Visualizes your potential progress over time, offering motivation.

Decision-making guidance: Use these estimated points as a starting guideline. If you are a new WW member, compare these results with the official WW app's calculations. Adjust your food choices based on the points system, prioritizing nutrient-dense, lower-point foods. Remember that the WW program also includes "ZeroPoint foods," which are not factored into this basic calculator but are a significant part of the official plan. This tool is best used to understand the *basis* of point allocation and to track progress conceptually.

Key Factors That Affect Current Weight Watchers Points Results

While the Current Weight Watchers Points Calculator provides a valuable estimate, several real-world factors can influence your actual points and weight loss journey. Understanding these is crucial for effective weight management:

  • Metabolic Rate Variations: Individual metabolic rates can differ due to genetics, muscle mass, and hormonal factors, even among people with similar stats. Your BMR and TDEE are estimates, and your actual energy expenditure might be slightly higher or lower.
  • Accuracy of Activity Level Input: The activity level multiplier is a broad category. Your actual daily movement, including non-exercise activity thermogenesis (NEAT) like fidgeting and walking around, plays a significant role and is hard to quantify precisely in a simple calculator.
  • Muscle Mass vs. Fat Mass: The calculator uses total weight. Muscle tissue burns more calories at rest than fat tissue. Someone with higher muscle mass might have a higher BMR than estimated based solely on weight and height.
  • Age-Related Metabolic Changes: Metabolism tends to slow down with age. While the formula accounts for age, individual responses can vary.
  • Program-Specific Rules (ZeroPoint Foods): The official WW program has a list of "ZeroPoint foods" (like fruits, vegetables, lean proteins) that don't count towards your daily points. This calculator doesn't incorporate these, meaning your actual WW experience might feel more flexible than the raw point calculation suggests.
  • Water Retention and Hormonal Fluctuations: Factors like hydration, sodium intake, menstrual cycles (for women), and stress can cause temporary fluctuations in weight due to water retention, masking fat loss on the scale.
  • Consistency in Tracking: Accurately tracking food intake and activity is vital. Inaccurate logging will lead to inaccurate results and hinder progress, regardless of the calculator's output.
  • Individual Food Pointing: WW assigns points to specific foods based on a detailed algorithm (calories, saturated fat, sugar, protein). This calculator estimates your *allowance*, not the points for individual foods.

Frequently Asked Questions (FAQ)

1. Is this calculator an official Weight Watchers tool?

No, this is an independent calculator designed to estimate WW points based on common formulas and principles. It is not affiliated with or endorsed by WW (Weight Watchers) and may not provide the exact points calculated by their official app or program.

2. How accurate are the estimated points?

The accuracy is dependent on the general formulas used and the quality of your input. WW's proprietary algorithm is complex and considers more factors, including specific nutritional breakdowns of foods and personalized 'ZeroPoint' food lists. This calculator provides a reasonable estimate for understanding the calculation basis.

3. What are 'ZeroPoint' foods, and why aren't they in this calculator?

'ZeroPoint' foods are items like fruits, vegetables, lean proteins, etc., that WW designates as not needing points tracking because they are generally healthy and lower in calories. This calculator estimates your daily *point allowance*, not the points for individual foods, and does not include the concept of ZeroPoint foods.

4. Can I lose weight if I go slightly over my daily points?

Weight loss primarily depends on a consistent calorie deficit over time. Minor, occasional deviations might not significantly derail progress, especially if you remain active and consistent overall. However, consistently exceeding your points will likely hinder weight loss.

5. What should I do if my calculated points seem too low or too high?

Compare the results with the official WW app. If they differ significantly, prioritize the WW app's guidance. If you feel the estimated points are unsustainable for your lifestyle, review your activity level input or consult with a WW coach for personalized advice.

6. Does this calculator account for different WW plans (e.g., PersonalPoints)?

No, this calculator provides a generalized estimation. Modern WW programs like PersonalPoints offer highly customized plans based on individual food preferences and other factors. This calculator does not replicate those advanced personalization features.

7. How often should I recalculate my points?

You should recalculate your points whenever there's a significant change in your weight, activity level, or if you reach your goal weight. Minor fluctuations don't typically require a recalculation.

8. What is the typical calorie deficit for losing 1 kg per week?

It's generally accepted that a deficit of approximately 7700 calories is needed to lose 1 kg of body fat. Therefore, to lose 1 kg per week, you need a daily deficit of about 1100 calories (7700 / 7).

Disclaimer: This calculator provides estimations for educational purposes only. It is not a substitute for professional medical advice or the official Weight Watchers program. Always consult with a healthcare provider or a WW coach for personalized guidance.

var chartInstance = null; function calculateBMR(weightKg, heightCm, age, gender) { var bmr = 0; if (gender === 'male') { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) + 5; } else { bmr = (10 * weightKg) + (6.25 * heightCm) – (5 * age) – 161; } return bmr; } function calculateTDEE(bmr, activityLevel) { return bmr * activityLevel; } function validateInput(id, errorId, min, max) { var input = document.getElementById(id); var value = parseFloat(input.value); var errorSpan = document.getElementById(errorId); errorSpan.textContent = "; if (isNaN(value)) { errorSpan.textContent = 'Please enter a valid number.'; return false; } if (value max) { errorSpan.textContent = 'Value is too high.'; return false; } return true; } function calculatePoints() { var age = parseFloat(document.getElementById('age').value); var gender = document.getElementById('gender').value; var weightKg = parseFloat(document.getElementById('weightKg').value); var heightCm = parseFloat(document.getElementById('heightCm').value); var activityLevel = parseFloat(document.getElementById('activityLevel').value); var goalWeightKg = parseFloat(document.getElementById('goalWeightKg').value); var weeklyGoal = parseFloat(document.getElementById('weeklyGoal').value); // Clear previous errors document.getElementById('ageError').textContent = "; document.getElementById('weightKgError').textContent = "; document.getElementById('heightCmError').textContent = "; document.getElementById('goalWeightKgError').textContent = "; document.getElementById('weeklyGoalError').textContent = "; // Basic validation if (!validateInput('age', 'ageError', 1, 120)) return; if (!validateInput('weightKg', 'weightKgError', 1, 1000)) return; if (!validateInput('heightCm', 'heightCmError', 1, 300)) return; if (!validateInput('goalWeightKg', 'goalWeightKgError', 1, 1000)) return; if (!validateInput('weeklyGoal', 'weeklyGoalError', 0.01, 5)) return; if (goalWeightKg >= weightKg) { document.getElementById('goalWeightKgError').textContent = 'Goal weight must be less than current weight.'; return; } var bmr = calculateBMR(weightKg, heightCm, age, gender); var tdee = calculateTDEE(bmr, activityLevel); var weeklyCalorieDeficitNeeded = weeklyGoal * 7700; // ~7700 kcal per kg of fat var dailyCalorieDeficitNeeded = weeklyCalorieDeficitNeeded / 7; var targetDailyCalories = tdee – dailyCalorieDeficitNeeded; // WW Points Estimation Logic (Simplified) // A common approach involves a baseline calorie intake and a conversion factor. // WW's actual formula is proprietary and includes ZeroPoint foods, protein, fiber etc. // For this estimation, we'll link points to calories, assuming a baseline and a typical point-to-calorie ratio. // Let's assume a baseline intake that allows for weight loss, e.g., ~1500 kcal for women, ~1800 for men as a starting point if TDEE is higher, // and a conversion factor. The actual WW points are often lower than a direct calorie conversion suggests. // This is a highly simplified estimation. var estimatedDailyPoints = 0; var baselineCalories = (gender === 'female') ? 1500 : 1800; // Generic baseline var caloriesPerPoint = 50; // A common estimate for conversion, can vary if (targetDailyCalories < baselineCalories) { // If calculated target is below baseline, use baseline for points calculation, // implying the points themselves will create the deficit. // The actual WW points are often lower than direct calorie math. // Let's adjust to be more aligned with typical WW ranges. // Example: If target calories is 1700, and baseline is 1500, deficit is 200. // If we aim for ~0.5kg/week deficit (3500 kcal/week), daily deficit is 500 kcal. // If TDEE is 2200, target is 1700. // A common daily points range is 20-40. // Let's map TDEE range to points range, and adjust for deficit. // This is more of an art than science without WW's actual algorithm. // Simplified approach: Calculate points based on a portion of TDEE, adjusted for goal. // A common approach is a base + points for activity/weight. // Let's use a more direct method: Estimate points that create a deficit relative to TDEE. // If targetDailyCalories is the goal, and we assume a typical daily point value yields X calories: // Let's try to map TDEE to points, and reduce if needed for goal. var pointsFromTDEE = (tdee – baselineCalories) / caloriesPerPoint; // Rough idea // Now, factor in the goal deficit. The *total* deficit should be met. // The points allowance should ensure this. // Let's use a simplified calculation that ensures the calorie deficit is met through points. // Daily points should roughly align with Target Daily Calories. // Assuming ~50 kcal/point for simplicity for non-zero point foods. estimatedDailyPoints = Math.round((targetDailyCalories – (baselineCalories * 0.5)) / caloriesPerPoint); // Very rough heuristic // Ensure a minimum sensible points value if (estimatedDailyPoints 60) estimatedDailyPoints = 60; // Cap for estimation } else { // If TDEE is high, points might be higher. estimatedDailyPoints = Math.round((targetDailyCalories – baselineCalories) / caloriesPerPoint); if (estimatedDailyPoints 70) estimatedDailyPoints = 70; // Cap for estimation } // Recalculate weekly points var estimatedWeeklyPoints = estimatedDailyPoints * 7; // Update results display document.getElementById('mainResult').textContent = estimatedDailyPoints + ' Points'; document.getElementById('bmr').textContent = 'BMR: ' + bmr.toFixed(0) + ' kcal'; document.getElementById('tdee').textContent = 'TDEE: ' + tdee.toFixed(0) + ' kcal'; document.getElementById('caloriesForGoal').textContent = 'Target Daily Calories: ' + targetDailyCalories.toFixed(0) + ' kcal'; document.getElementById('pointsFormula').textContent = 'Points Formula: Estimated (based on TDEE, deficit, and calorie conversion)'; document.getElementById('weightLossPerWeek').textContent = 'Weight Loss Per Week: ' + weeklyGoal + ' kg'; document.getElementById('dailyPointsTable').textContent = estimatedDailyPoints; document.getElementById('weeklyPointsTable').textContent = estimatedWeeklyPoints; document.getElementById('calorieDeficitTable').textContent = (weeklyCalorieDeficitNeeded).toFixed(0); document.getElementById('weightLossTable').textContent = weeklyGoal; updateChart(weeklyGoal); } function resetCalculator() { document.getElementById('age').value = 35; document.getElementById('gender').value = 'female'; document.getElementById('weightKg').value = 70; document.getElementById('heightCm').value = 170; document.getElementById('activityLevel').value = 1.375; document.getElementById('goalWeightKg').value = 60; document.getElementById('weeklyGoal').value = 0.5; document.getElementById('ageError').textContent = "; document.getElementById('weightKgError').textContent = "; document.getElementById('heightCmError').textContent = "; document.getElementById('goalWeightKgError').textContent = "; document.getElementById('weeklyGoalError').textContent = "; document.getElementById('mainResult').textContent = '– WW Points –'; document.getElementById('bmr').textContent = 'BMR: — kcal'; document.getElementById('tdee').textContent = 'TDEE: — kcal'; document.getElementById('caloriesForGoal').textContent = 'Target Daily Calories: — kcal'; document.getElementById('pointsFormula').textContent = 'Points Formula: Standard (based on TDEE & deficit)'; document.getElementById('weightLossPerWeek').textContent = 'Weight Loss Per Week: — kg'; document.getElementById('dailyPointsTable').textContent = '–'; document.getElementById('weeklyPointsTable').textContent = '–'; document.getElementById('calorieDeficitTable').textContent = '–'; document.getElementById('weightLossTable').textContent = '–'; if (chartInstance) { chartInstance.destroy(); chartInstance = null; } var canvas = document.getElementById('weightLossChart'); if (canvas) { var ctx = canvas.getContext('2d'); ctx.clearRect(0, 0, canvas.width, canvas.height); } } function copyResults() { var mainResult = document.getElementById('mainResult').textContent; var bmr = document.getElementById('bmr').textContent; var tdee = document.getElementById('tdee').textContent; var targetCalories = document.getElementById('caloriesForGoal').textContent; var pointsFormula = document.getElementById('pointsFormula').textContent; var weightLossPerWeek = document.getElementById('weightLossPerWeek').textContent; var dailyPointsTable = document.getElementById('dailyPointsTable').textContent; var weeklyPointsTable = document.getElementById('weeklyPointsTable').textContent; var calorieDeficitTable = document.getElementById('calorieDeficitTable').textContent; var weightLossTable = document.getElementById('weightLossTable').textContent; var resultString = "— Your Estimated WW Points —\n\n"; resultString += mainResult + "\n"; resultString += bmr + "\n"; resultString += tdee + "\n"; resultString += targetCalories + "\n"; resultString += pointsFormula + "\n"; resultString += weightLossPerWeek + "\n\n"; resultString += "— Summary Table —\n"; resultString += "Daily Points Allowance: " + dailyPointsTable + "\n"; resultString += "Weekly Points Allowance: " + weeklyPointsTable + "\n"; resultString += "Calorie Deficit per Week: " + calorieDeficitTable + "\n"; resultString += "Estimated Weight Loss per Week: " + weightLossTable + "\n"; if (navigator.clipboard && window.isSecureContext) { navigator.clipboard.writeText(resultString).then(function() { alert('Results copied to clipboard!'); }).catch(function(err) { console.error('Failed to copy: ', err); fallbackCopyTextToClipboard(resultString); }); } else { fallbackCopyTextToClipboard(resultString); } } function fallbackCopyTextToClipboard(text) { var textArea = document.createElement("textarea"); textArea.value = text; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; textArea.style.top = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'successful' : 'unsuccessful'; console.log('Fallback: Copying text command was ' + msg); alert('Results copied to clipboard!'); } catch (err) { console.error('Fallback: Oops, unable to copy', err); alert('Failed to copy results. Please copy manually.'); } document.body.removeChild(textArea); } function updateChart(weeklyGoal) { var canvas = document.getElementById('weightLossChart'); if (!canvas) return; var ctx = canvas.getContext('2d'); // Clear previous chart if it exists if (chartInstance) { chartInstance.destroy(); } var initialWeight = parseFloat(document.getElementById('weightKg').value); var labels = []; var weightData = []; var goalWeight = parseFloat(document.getElementById('goalWeightKg').value); for (var i = 0; i <= 12; i++) { // Project for 12 weeks labels.push('Week ' + i); var projectedWeight = initialWeight – (weeklyGoal * i); weightData.push(projectedWeight); } chartInstance = new Chart(ctx, { type: 'line', data: { labels: labels, datasets: [{ label: 'Projected Weight (kg)', data: weightData, borderColor: '#004a99', backgroundColor: 'rgba(0, 74, 153, 0.1)', fill: true, tension: 0.3 // Makes the line slightly curved }, { label: 'Goal Weight (kg)', data: Array(labels.length).fill(goalWeight), borderColor: '#28a745', borderDash: [5, 5], backgroundColor: 'rgba(40, 167, 69, 0.05)', fill: false, pointRadius: 0 // Hide points for goal line }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false, title: { display: true, text: 'Weight (kg)' } }, x: { title: { display: true, text: 'Timeframe' } } }, plugins: { legend: { display: true, position: 'top', }, title: { display: true, text: 'Projected Weight Loss Over 12 Weeks' } } } }); } // Simple FAQ toggle functionality function toggleFaq(element) { var parent = element.parentElement; parent.classList.toggle('active'); } // Initial calculation on load document.addEventListener('DOMContentLoaded', function() { calculatePoints(); // Perform an initial calculation with default values });

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